codope opened a new pull request #5169:
URL: https://github.com/apache/hudi/pull/5169
## What is the purpose of the pull request
In order to drop any metadata partition (index), we can reuse the
DELETE_PARTITION operation in metadata table. Subsequent to this, we can
support drop index (with table config update) for async metadata indexer.
## Brief change log
- Add a new API in `HoodieTableMetadataWriter`
- Current only supported for Spark metadata writer
## Verify this pull request
Added a unit test in TestHoodieBackedMetadata, which creates multiple
metadata partitions and then drops one. Asserted that there are no file slice
from the dropped partition.
## Committer checklist
- [ ] Has a corresponding JIRA in PR title & commit
- [ ] Commit message is descriptive of the change
- [ ] CI is green
- [ ] Necessary doc changes done or have another open PR
- [ ] For large changes, please consider breaking it into sub-tasks under
an umbrella JIRA.
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